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health physics

A Mirion Technologies Division

Featuring:

RADOS TwoStep™-Exit II

Whole Body Contamination Monitor

CheckPoint:Body™-family

FEATURES

• Very easy maintenance due to new electronic

concept, new detector technology, new hardware

concept

• Fibre detectors

• much reduced operation and maintenance cost

• decreased dead-zones

• gas-free

• central photomultiplier

• Touch screen

• Mini-UPS (uninterruptable power supply)

• Optimized measurement geometry

• Improved operation in noisy electronic environments

and increased gamma background

RADOS TwoStep™-Exit II

Whole Body Contamination Monitor

Handling radioactive materials may cause contami-

nation. Our CheckPoint:Body™ monitors are

designed to thoroughly check all persons entering or

leaving a particular area, building or site. Typically, the

monitors are deployed between controlled and clean

areas.

The TwoStep

concept has been proven in genera-

tions of RADOS body monitors to be the optimum

method to measure whole body contamination.

The new electronic concept paired with proven bre

detectors provide a highly efcient measurement

chain. The light signal produced by the detector

will be turned into an electronic signal in the central

photomultiplier box and thereafter reach the PC for

calculation and subsequent processing.

Benets are simple & economic operation and

maintenance, particularly in comparision to standard

monitors.

TwoStep

-Exit II is the product of development at

the cutting edge of technology, based on years of

experience in developing and building body monitors.

Summary of content (4 pages)

PAGE 1
RADOS TwoStep™-Exit II Whole Body Contamination Monitor CheckPoint:Body™-family RADOS TwoStep™-Exit II Whole Body Contamination Monitor Handling radioactive materials may cause contamination. Our CheckPoint:Body™ monitors are designed to thoroughly check all persons entering or leaving a particular area, building or site. Typically, the monitors are deployed between controlled and clean areas.
PAGE 2
monitor description Options • Real-time, multi-tasking operating system QNX • GammaFibreTM detectors • RADOS industrial PC 2010 • Beta/Gamma hybrid detectors • 15” touch screen • Various grid transparencies for detector • Passageway illumination (LED) protection • Service illumination (LED) • Extended Mini-UPS by adding batteries • Automatic start of measurement when entering • Reversible walk-through direction monitor • Additional display at exit side • P accelarator to reduce measuring tim
PAGE 3
MEaSurement Background Measurement • Automatic background substraction • Background updated every second for each detector • Measurement algorithm using two median filters to follow any background change in real time • Quickly fluctuating background does not lead to measurement abort • After background change automatic return to status «ready» Measurement • Automatic calculation of shortest possible measurement time • P² accelerator to shorten measurement time for non-contaminated personnel by up to 30 % •
PAGE 4
RADOS TwoStep™-Exit II Whole Body Contamination Monitor CheckPoint:Body™-family CheckPoint:Body™ BetaFibre™ detectors type Body Hands Head Feet Small Items (optional) RFD485 RFD485 RFD485 RFD485 RFD485 34 + GammaFibre™ detectors Body Feet/Hands Small Items (optional) TwoStep™-Exit II window surface area one type fits all positions 485 cm² each type sensitive volume RFD13/67 (up to 6 detectors) RFD6/18 (1 detector) RFD4.8/3.